My Singular Swift has developed a click which sounds like it’s coming from the drivetrain (it’s not loud or alarming but it’s annoying me).
It occurs , if I put power through the driveside crank, at the point where that power is relaxed (at the bottom of the stroke). I’m riding flat pedals and an ancient XT Octalink 3×9 chainset. If I remove the driveside pedal and just push my foot down on the crank arm I can still generate the click.
I’ve removed and regreased the eccentric bottom bracket as well as the Octalink BB cartridge, cranks and crank bolts have also been attended to (including chainring bolts) as have the pedals. I’ve even replaced the chain, but it’s still there.
What to try next? I might check that the cassette hasn’t worked loose. I suppose that it could be a bearing starting to go in the venerable bottom bracket (or even a hub bearing as these can generate clicks that seem to come anywhere but the affected hub). It does sound as if the click is coming from the chainset which is probably 12-14 years old and on its 3rd or 4th bike (new rings obviously); perhaps I need a new one!
Any thoughts?